Emerald Harvest Cal-Mag Quart/0.95 Liter (12/Cs) the Uni-Slab is perfect for

the Uni-Slab is perfect for one large plant

You can dial the air circulation from 250 to 500 cu ft per minute of particle-free air

Units should not be run without ducting or the top of the unit may be covered in water and shut off

Grow-Cubes are small loose 1/2 in cubes of stonewool

Emerald Goddess® summons the best harvest by putting the best nutrition in your garden

Emerald Harvest Cal-Mag Quart/0.95 Liter (12/Cs) the Uni-Slab is perfect forKeep your plants productive and green with Cal Mag, a calcium and magnesium supplement from Emerald Harvest. Containing top quality ingredients, Cal Mag is designed to nourish crops with extra calcium and magnesium and create the right conditions for abundant flowering and a heavy yield. This is especially important when growing in some media, such as coco coir, but any garden can benefit. Use Cal Mag as a supplement to a base nutrient series for